Spiral fluted wheel for a pump

ABSTRACT

A spiral fluted wheel ( 10 ) for a pump is composed of a first plate ( 11 ), a second plate ( 12 ) corresponding to the first plate ( 11 ), and a plurality of spiral blades sandwiched between the first plate ( 11 ) and the second plate ( 12 ). The plurality of spiral blades are combined easily and each has a large welding area corresponding to the first plate ( 11 ) and the second plate ( 12 ) so as to make the wheel have excellent endurance and precision in structure.

BACKGROUND OF THE INVENTION

[0001] 1. Field of the Invention

[0002] The present invention relates to a spiral fluted wheel for apump, and more particularly to a spiral fluted wheel that has excellentendurance and can be produced rapidly and precisely.

[0003] 2. Description of Related Art

[0004] Referring to FIGS. 4, 5 and 6, a water pump with a conventionalmultiple vane case comprises a shell (30), multiple vane cases (31),multiple guide cases (311), a filter (32), a motor (33) with anelectricity supply wire (34), and a water outlet pipe (35). The waterpump is typically received in a well to draw water therefrom.

[0005] The shell (30) contains the multiple vane cases (31) and themultiple guide cases (311) in alternative with each other inside and thefilter (32) is mounted under the shell (30) to filtrate water by itsmeshes. The motor (33) is secured under the filter (32) and has an axletube (330) penetrating the multiple vane cases (31) and the multipleguide cases (311) and driving all cases (31, 311) to rotate. The waterpipe (35) is communicated with the shell (30) to pump water out of thewell. Additionally, the multiple guide cases (311) each has a pluralityof guide waterways (3110) defined therein. The guide waterways (3110)communicate with two vane cases (31) adjacent to the guide case (311).

[0006] The detail structure of the vane case (31) is shown particularlyin FIG. 6. The vane case (31) is composed of an upper plate (310), alower plate (313) respectively combined with the upper plate (310), andeach combined pair of upper and lower plates (310, 313) has a pluralityof vane strips (315) sandwiched therebetween.

[0007] The upper plate (310) is a round plate having a hole (3101)defined in the center and the hole (3101) has a toothed periphery. Theaxle tube (330) has a toothed circumference to penetrate and drivinglyengage each upper plate (310) via mating between the toothed peripheryof the hole (3101) and the toothed circumference of the axle tube (330).The lower plate (313) is a round plate corresponding to the upper plate(310) and an aperture (3131) is defined in the center of the lower plate(313). The aperture (3131) has larger diameter than a maximum diameterof the axle tube (330) to allow water to flow into the vane cases (31).The plurality of vane strips (315) are spirally arranged between theupper plate (310) and the lower plate (313) so that multiple channelsare formed therebetween. The vane strips (315) are spot welded to boththe upper and lower plates (310, 313).

[0008] Now referring to FIG. 5 again, when the motor operates, the axletube (330) drives the multiple vane cases (31) to rotate to causecentrifugal force to water. so that the water inside the vane cases (31)starts to be thrown out by the centrifugal force and the water outsidethe vane cases (31) is filtrated by the filter (32) and attracted intothe multiple vane cases (31) via the aperture (3131) of the lower plate(313). . The rotating multiple vane cases (31) cause centrifugal forceto the water so as to make the water travels spirally along the channelsbetween vane strips (315) and be expelled from the vane cases (31),.When the water is throw out of the vane cases (31), the guide waterways(3110) of the guide cases (311) receive the thrown water and spiral thewater up to another upper vane cases. Therefore, the water is pumped upgradually to reach the water pipe (35) when the axle tube (330) rotatesfast enough, and then the water is pumped from the well.

[0009] However, several drawbacks exist in this conventional water pump:

[0010] 1. Not Endurable:

[0011] For efficiency of pumping water, the vane strips (315) must bethin. Therefore, spot-welding of areas of the vane strips (315) to theupper plate (310) and the lower plate (315) are small and not firmenough. When the rotating speed of the vane cases (31) is high,especially after rapid acceleration, the vane strips (315) easily loosento cause disturbance and obstruction to the water flow. Moreover, thevane strips (315) can become completely loosened from the upper andlower plates (310,313) and then stuck inside the water pump to causeserious damage to the water pump. On the contrary, if the vane strips(315) are thick, efficiency of the water pump is reduced and productcost is raised.

[0012] 2. Time-Wasting in Combination:

[0013] For one vane case (31), the vane strips have to be weldedprecisely to make the water flow fluently inside the vane case (31).However, welding the thin and fiddly vane strips (315) to the upperplate (310) and the lower plate (313) is troublesome and time-wasting.

[0014] In order to make the water pump endurable and have moreefficiency, the present invention has arisen to mitigate and/or obviatethe disadvantages of the conventional vane cases.

SUMMARY OF THE INVENTION

[0015] The main objective of the present invention is to provide aspiral fluted wheel for a water pump that can be combined rapidly andprecisely.

[0016] Another objective of the present invention is to provide a spiralfluted wheel for a water pump that is firm and endurable.

[0017] Further benefits and advantages of the present invention willbecome apparent after a careful reading of the detailed description withappropriate reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

[0018]FIG. 1 is an exploded perspective view of a spiral fluted wheelfor a water pump in accordance with the present invention;

[0019]FIG. 2 is a top cross-sectional view of the spiral fluted wheelfor a water pump in assembly in accordance with FIG. 1;

[0020]FIG. 3 is a cross-sectional view of the spiral fluted wheel for awater pump along line 3-3 in FIG. 2;

[0021]FIG. 4 is a cross-sectional side view of a water pump withconventional multiple vane cases;

[0022]FIG. 5 is a side cross-sectional view of the vane cases and theguide cases in combination; and

[0023]FIG. 6 is an exploded perspective view of the vane case inaccordance with FIG. 4.

DETAILED DESCRIPTION OF THE INVENTION

[0024] With reference to FIG. 1, a spiral fluted wheel (10) for a waterpump in accordance with the present invention comprises a first plate(11), a second plate (12), and multiple spiral blades (20).

[0025] The first plate (11) of the spiral fluted wheel (10) is a roundplate and a lock hole (110) is defined in the center of the first plate(11). The lock hole (110) is adapted to be firmly secured on an axletube of the water pump to make the spiral fluted wheel (10) rotate withthe axle tube when the axle tube rotates.

[0026] The second plate (12) of the spiral fluted wheel (10) is a roundplate the same size as the first plate (11) and an inlet aperture (120)is defined in the center of the second plate (12). The inlet aperture(120) has larger diameter than a diameter of the axle tube to leave somespace between the second plate and the axle tube for entry of water intothe spiral fluted wheel (10).

[0027] The multiple spiral blades (20) are combined together to form asandwich layer with a plurality of channels between the first plate (11)and the second plate (12).

[0028] In FIG. 1, each spiral blade (20) is partially spiral-shaped anda spiral channel (21) is defined in a middle portion of the spiral blade(20). The spiral blade (20) has a flat bottom (201) and two oppositethin side-walls (203) erected on the flat bottom (201) to construct andsurround the spiral channel (21). Additionally, each side-wall (203) hasa wedge (23) extending laterally and outwardly from a top of the sidewall (203). Width of the wedge (23) is half a width of the flat bottom(201).

[0029] The flat bottom (201) of the spiral blade (20) is welded to anupper face of the second plate (12) and top faces of the wedges (23) arewelded to a lower face of the first plate (11) to form the sandwichlayer between the first plate (11) and the second plate (12).

[0030] Now referring to FIGS. 2 and 3, when the multiple spiral blades(20) are composed together, the wedges (23) of one spiral blade (20) arematched up to the wedges (23) of adjacent spiral blades (20) to formsub-channels (25) between the combined spiral blades (20). Because thewidth of the wedges (23) is half of width of the flat bottom (201), thesub-channel (25) composed of two adjacent wedges (23) is the same widthwith the spiral channel (21). Therefore, three blades (20) can formthree spiral channels (21) and three sub-channels (25).

[0031] According to the above description, several advantages arediscovered and listed as following:

[0032] 1. Excellent Endurance:

[0033] Because the spiral blades (20) are combined by welding the flatbottom (201) and the wedge (23) respectively to the first plate (11) andthe second plate (12), a contact area of the spiral blade (20) is largewhereby the spiral blades (20) are secure and the spiral fluted wheel(10) is strong and endurable.

[0034] 2. Convenient in Combination:

[0035] The multiple spiral blades (20) have normal sizes, thicknesses,and certain channels defined therein. Therefore, the spiral blades (20)only need to be put together to form the complete sandwich layer. Shapesof the spiral fluted wheel (10), the spiral channels (21), and thesub-channels (25) are precise to ensure that the water inside the spiralfluted wheel (10) flows fluently.

[0036] Although the invention has been explained in relation to itspreferred embodiment, it is to be understood that many other possiblemodifications and variations can be made without departing from thespirit and scope of the invention as hereinafter claimed.

What is claimed is:
 1. A spiral fluted wheel for a pump adapted to besecured on a rotating device, and the spiral fluted wheel (10)comprising: a first plate (11) having a lock hole (110) defined in acenter of the first plate (11), and a periphery defining the lock hole(110) adapted to be firmly secured on a rotating device; a second plate(12) corresponding to the first plate (11) and having an inlet aperture(120) defined in a center of the second plate (12) for entry of waterinto the spiral fluted wheel (10); and multiple spiral blades (20)sandwiched between the first plate (11) and the second plate (12), eachspiral blade (20) having a spiral channel (21) defined therein andforming a sub-channel (25) with an adjacent spiral blade (20) whereby inoperation the spiral fluted wheel is driven to rotate by the rotatingdevice and water travels into the spiral fluted wheel via the inletaperture and is centrifugally driven outwardly along the spiral channeland sub channel.
 2. The spiral fluted wheel for a pump as claimed inclaim 1, wherein each spiral blade has two wedges (23) extendingrespectively outwardly from the spiral blade (20), each wedge (23)complemented with other wedge (23) of adjacent spiral blades so as toform the sub-channel (25).